| Acronym | Meaning |
| GEM | Giotto Extended Mission |
| MSOCC | Multisatellite Operations Control Center |
| ISO | Infrared Space Observatory |
| EOS | Electrophoresis Operations In Space |
| STS | Shuttle Transport System / Space Transportation System |
| GBT | Green Bank Telescope |
| GNC | Guidance |
| RAE | Royal Aerospace Establishment |
| SOFIA | Stratospheric Observatory For Infrared Astronomy |
| NICMOS | Near Infrared Camera/Multi Object Spectrometer |